So, I am close to the end of the Two Betrayals level, right at the cutscene where the black bars come down and “The Tunnels Below” shows up on the bottom right. Cortana tells you “I’ve located the Pillar of Autumn…”. Well, I am stuck on a bridge with no Banshee around and unable to complete the level. There is a Banshee flying around, but no way for me to get into it without blowing it up. I really do not want to have to restart the level, but it’s looking like I will have to. In walkthroughs that people have posted online, it looks like a Banshee is on the right when you come outside on the bridge. Not for me. Any ideas what I can do?
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> So, I am close to the end of the Two Betrayals level, right at the cutscene where the black bars come down and “The Tunnels Below” shows up on the bottom right. Cortana tells you “I’ve located the Pillar of Autumn…”. Well, I am stuck on a bridge with no Banshee around and unable to complete the level. There is a Banshee flying around, but no way for me to get into it without blowing it up. I really do not want to have to restart the level, but it’s looking like I will have to. In walkthroughs that people have posted online, it looks like a Banshee is on the right when you come outside on the bridge. Not for me. Any ideas what I can do?
Sounds like you parked your old Banshee where the new one spawns. Did you hear crashing when you came out of the pulse generator? I’ll bet both banshees are at the bottom of the chasm. If you got a checkpoint after this occurred, then, yeah, I hate to say it, but you’ll have to restart the mission. Sorry about that. To avoid this in the future, don’t place your banshee on the side of the door that is on the right when coming out. That’s where the new banshee spawns. 
you may need to revert to the previous checkpoint. The game has a failsafe to keep you from getting stuck with an impossible checkpoint, and so the previous checkpoint is also kept in memory. As soon as you spawn, throw a grenade at your feet and kill yourself. Do this about 5 times in a row. The game should take you back to the last checkpoint. You’ll have to replay that small piece of the level, but it’s better than restarting the whole thing. If you’ve shut the console off, then that checkpoint data may have cleared out though. I don’t know all the details of how that failsafe works.
basically, if you die quickly enough after spawning enough times(and I’m talking about within a few seconds), the game will think it stuck you in an impossible to escape scenario and will try to rectify it.
So I just tried killing myself 20 times in a row instantly from my respawn. No luck. My respawn does start RIGHT when Cortana starts talking and the black bars come up. Wonder if this has anything to do with my issue. Also, there is a carcass in the area where a Banshee should respawn. That playing a roll?